One million images of wildlife in
16 tropical forests around the world have been captured by the Tropical Ecology Assessment and Monitoring Network. Since it began its work in 2008 to monitor changes in wildlife, vegetation and climate, cameras in the the Americas, Africa and Asia have photographed more than 370 different species including elephants, gorillas, chimpanzees, large cats, honey badgers, tapirs and tropical birds

Christian Ziegler of Germany won the first prize in the nature single category of the World Press photo contest 2013 with this picture of an endangered southern cassowary feeding on the fruit of the blue quandong tree in Black Mountain Road, Australia

A
young adult male orangutan is captured for relocatation after its home forest has quickly been cleared for palm oil plantations in Tripa, Aceh province, Sumatra, Indonesia. The Tripa peat swamp forest supports the highest density of Sumatran orangutans anywhere on earth, but are still being cleared by palm oil companies who think they are beyond the reach of the law, the situation is urgent and requires action according to Dr Ian Singelton, director of the Sumatran orangutan conservation programme

An emu runs across grazing land near the outback town of Collie, Western Australia. Staff at an Australian wildlife park said they were concerned and puzzled at the theft of an emu in a night raid, saying the tall bird would be frightened and possibly injured. The female emu was discovered missing from Featherdale Wildlife Park in Sydney's western suburbs with her enclosure found to contain a large quantity of emu feathers, indicating a struggle

A six-week old sloth plays with its mother, Banya, at the Budapest zoo. Infant sloths normally cling to their mothers, but occasionally fall off. However, sloths are sturdily built and rarely die from a fall

Perch fish swimming together in Sweden. Researchers around the world have taken a close look at the
effects of pharmaceuticals in extremely low concentrations, measured in parts per billion. Such drugs have turned up in waterways in Europe, the US and elsewhere over the past decade. Normally shy perch became bolder and more independent when exposed to a drug called oxazepam for treating anxiety

A red claw crayfish in a tank at a local fish shop in Harare, Zimbabwe. Scientists in Zimbabwe say a fresh water crayfish brought from Australia is breeding out of control in the northern Lake Kariba, devouring the food sources of other fish and putting the nation's entire aquatic ecosystem at risk. Officials at the Zimbabwe University lakeshore research station say the red claw crayfish, introduced a decade ago for a fish farming project, has no natural predators in the wild. Crocodiles don't like them and they produce clusters of eggs which are up to half the size of a tennis ball, which hatch prolifically

A leaked report revealed that Australia's opposition party is investigating an infrastructure project believed to cost up to AUD$30bn to build up to 100 dams, mostly across northern Australia. The ambitious policy paper suggests that it could turn northern Australia into a foodbowl, producing enough to feed up to 120 million people. This picture shows the flooded rivers systems outside Windorah

Paul Nicklen of Canada, a photographer working for the National Geographic magazine, won the first prize in the nature stories category of the World Press photo contest 2013 with the series Emperor Penguins. The picture shows a group of emperor penguins swimming in the Ross Sea, Antarctica